Add NetworkStackConstants to framework/ am: ef5de53830 am: 2e816cbe49

Original change: https://android-review.googlesource.com/c/platform/frameworks/libs/net/+/1512756

Change-Id: Idc300af199e343b2247e6c4ce5f7b7d1d70b164d
diff --git a/staticlibs/device/com/android/net/module/util/NetworkStackConstants.java b/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java
similarity index 99%
rename from staticlibs/device/com/android/net/module/util/NetworkStackConstants.java
rename to staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java
index 1088477..1572fe0 100644
--- a/staticlibs/device/com/android/net/module/util/NetworkStackConstants.java
+++ b/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java
@@ -22,6 +22,7 @@
 
 /**
  * Network constants used by the network stack.
+ * @hide
  */
 public final class NetworkStackConstants {